Circular press



D. GUP

' Nov. 9, 1943.

Filed Dec. 12, 1942 2 Sheets-Sheet 1 /i K Q I e D. GUP

CIRCULAR PRES S Nov. 9, 1943.

Filed Dec. 12, 1942 2 Sheets-Sheet 2 I N VEN TOR. 0a v/d (941p ATTORNEY.

Patented Nov. 9, 1943 UNITED. STATES}, BATENT oFFicE CIRCULAR ennss'David Gup, Bochester, N. 'Y., assignor to The West Tire Setter Company,Rochester, N. Y., a corporation of New York Application December; 12,1942 Serial No. 68,775

9 Claims, (c1. 15s- 1 This invention relates to a circular'press, withmore particular reference tothe type of apparatus employing a series ofradially movable dies.

operating simultaneously to engage awork piece, and it has for itspurpose to provide such amachine with a practical, simple, andlefiicientmechanism operableto crimp or indent a metal cap or other outer memberatseveral circumferentially spaced points into correspondingly spacedrecesses or pockets formed in the outer surface of an inner cylindricalmember such as ashell,

' projectile, or thelike to which the outer member.

is to be attached.

More particularly the invention has for an object to provide a circularpress with a die having a concave operative surface engaging a portionof the surface of the work piece and a convex operative surface adjacentthereto and extending inwardly beyond said concave surface and operatingto crimp or indent a portion of the cap or outer member into a recess ofthe inner member for attachment thereto.

A further purpose of the invention is to provide such a die in twoparts, the portion which performs the crimping operation comprising acircular member having an operative surface that:

is convex in perpendicular planes, said member being adjustably securedto the body portion of the die so as to permit using every portion ofits periphery as it becomes worn at one part thereof.

Another object of the inventionv is to afford an efficient form ofcrimping means for the purpose outlined, comprising a circular memberhaving a transversely. convex peripheral operative surface, andadjustably mounted to permit theuse. of different portions of itsoperative surface, or the crimping member may be fixed and provided withan operative surface that is convexly curved in perpendicular planes.

Still an additional object of the invention is to afford simple andefficient means for guiding the die accurately to operative position bythe instrumentality that attaches the crimping member to the die, andalso structure for automatically seating the cap or outer member inproper position in relation to the dies, so that the cap is correctlyand accurately related to the shell or inner member to which it is to beattached by the crimping operation.

To these and other ends, the invention consists in the construction andarrangement of parts that will appear clearly from thefollowingdescription when read in conjunction with theaccomr n s r winhe ncvel eaturesibeing.

pointed out. in the claims. following the specification.

In the; drawings:

Fig. lis aplan view showing the general arrangement, of a circular pressincorporating a closed in Patent No, 2,256,740, September 23, 1941,

and it will be unnecessary in connection with the disclosurepf thepresent-invention to-enter into detail as tothe operating andcontrolling mechanism for radially moving the. rams on whichthe dies aremounted, as it will be understood that this structure is similar to thatof the aforementioned patent.

Referring moreparticularly -to the drawings inwhich like referencenumerals refer to the same parts throughout the several views,,ldesignateseach of the several carriers movable back andforth on a table2 and provided with a cylinder 3- cooperating with astationary piston 4and actuated inwardlywhen pressure fluid is permitted toflow into thecylinder through the pipe 7 5,. thecarriers being returned to theirouter or normal positions .by the springs 6.

Each carrier l-ha s a die mounted thereon and each of said dies includesan attaching portion 1 haying curved rear edge 8 fitting. against acorrespondingly curved surface onthe carrier l, the die being held inplace by a bolt 9 as in the structure of they aforementioned patent.Inwardly ofthe attachingportion l, the die includes a.body:portion [0that terminates in a concave 1 operativesurface l l, and is cut away atits upper portion to. afford a dished seat I2 which terminates at-;itsrear edge in an arc-shaped back wall I3 having a curvature correspondingto that of the crimping member now to be described.

Sincethere is greater wear and strain on the crimping or indentingportion of the die than on the rest'of its operative surface, it isdesirable to. providea crimping member that is adjustable so1asrtoutilize fresh portions when one part becomestexcessivelyworn, and toaccomplish this of the die, as shown in Fig. 2, thus affording anoperative surface that is convex in perpendicular planes and is held inplace with its circumferentially and transverselycurvedperiphery'fltting against the correspondingly arc-shaped back wall ii ofthe die which thus affords a rigid support for the crimping memberagainst lateral pressure. 2

After a crimping member has been used repeatedly and the operatingportion of its surface excessively worn, it can be turned on its seat byloosening the nut I6, to bring a fresh portion of its periphery intooperative position, without affecting the rigidity of itsattachment tothe body portion of the die or the efficiencyiof its operation; In thisfashion, the crimping member can be used by repeated adjustments on thedie, until every portion of its periphery has been utilized, although itis to be understood that the crimping operation could be successfullyperformed by an integral die in which the convex crimping portion andthe body portion of thedie' with a concave operative surface are formedin one piece.- I In the construction showmthe machine isarranged tofasten a'conventional cap A on to a shell or projectile B, the latterbeing provided for the purpose with suitable indentations or recessesCat spaced intervals around its periphery,

and it is desirable to position the cap A in-s uch relationtothecrimping members that the latter will engage the edge of the cap andforce por- 1 tions of the edge into the indentations.

The edge of the cap preferably occupies a posi tion slightlybeneath theupper surface; of -the crimping members and adjacent'to the horizontalaxis of thelattenthecap being positioned in a i work support thatmaintains the cap in proper relation to the crimping member;

'Ihe work support is designated at l8 and-includes a central opening i9somewhat larger than the head of the cap, while 2| designates a shoulderat the top of the opening IBand arranged to support the body portion ofthe cap which rests on the shoulder 2| when in operative position. Thework support I8 is suitably attached by bolts to a base 22 which has acentral opening 23 to .receive the tip of the cap and is suitablymounted on a stationary part of the machinedesignated at 2L a e Inoperation; the cap Ajis first inserted into the work support inverted asshown until it rests upon the shoulder 2| and the shell B is theninserted within the cap, the operator positioning the shell so that therecesses or indentations C are in vertical alinement withthe operativeportions of the crimping members, the shell being lowered as far as itwill go and limited in-its downward positioning. movement diameter ofthe cap. 3 I

The machine is then operated to cause. inward radial'movement of theseveral carriers, moving the crimping, members inwardly so that'theyforce the adjacent portions of the edge of the cap into the recesses onthe'shell while the concave surfaces ofg the dies ,below the crimpingmembers engage the outer periphery of the cap by the inner below itsedge portion and properly center the cap while preventing any distortionthereof which might otherwise occur.

It is essential to the efllcient and correct opera- 5 tion that the diesbe guided accurately in their radial movement so that the operativesurfaces 1 of the crimping members will be in correctvertical alinementwith the recesses inithe inner member, and in order to accomplish this,means are 7 10 provided for controlling and guiding the movement of thedies at points in close proximity to their operative portions.

This is preferably brought about by priividingv V the work support Itwith a series of radially dis-' posed slots 26 extending from the outeredge of the work support inwardly and cooperating with Each slot 26 isof suchsize as to afford a reasonably close fit with its head 21 andalso permit radial movement of the latter as the die moves inwardly,while at the same time insuring an accurate straight line movement ofthe operative surfaces of the die as it engages. the work piece.

While the invention has been shown as em- 25 bodied in a machineincluding six carriersand dies, it may also be applied to a machineutilizing any number of radially movable carriers and dies disposedsymmetrically around the work piece,.or to a single carrier and die. 1The structure shown can be manufactured at a minimum cost and readilyassembled. The. crimping members can be quickly adjusted to differentpositions without aflecting their accurate operation and efliciencyuntil every portion of can be quickly replaced when necessary.

; While the invention has been shown in connection with the mechanismillustrated, it is not confined to this precise embodiment, and this application is intended to cover such modifications and departures as maycome within the purposes of the improvements and the scope of therollowing claims.

'I claimz H U l 1 1.'In a circular press including aseries of radiallymovable carriers andfluid means for simultaneously actuating thecarriersinwardlyQa die" mounted on each carrier and includingaconcave operativesurface and a seat defined by an arc-shaped back' wall, and 1a circularcrimping member secured to said seat and rotatably adjustable thereon,said circular crimping member having a transversely convex peripheraloperative surface a part of which engages said are-- shaped back walland a portion of which extends beyond said'concave operative surfaceandacts to crimp a portion of an outer cylindrical member into-a recessof an inner cylindrical member to'which it is to be attached. J a

2. In a circular-press including aseries of radially movable carriersand fluid means for simultaneouslly actuating the carriers inwardly, adie mountedon each carrier and including a concave operative surface anda'seat definedby an arcshaped back wall, a circular crimping membersecured to said seat androtatably adjustable thereon, said'crim'pingmember having a transversely,convexperipheral operative surface a part'of which engages saidarc-shaped back wall anda portion of which extendsbeyond saidconcave. operativesurface andacts to crimp a portion of v I arecess "of an inner cylindrical' member to which it isto be-at an outercylindrical member-into I tached, the die having a vertical openingthereth rough,a bolt extending through said opening the. heads 21 on thebolts l5 aforementioned.-

their peripheral surfaces have been utilized and for fastening thecrimping member in place, said bolt having a head projecting below thedie, and a stationary work support having a radial slot in which saidbolt-head and the die are guided.

3. In a circular press for crimping a band on a cylindrical bodyincluding a series of radially movable carriers and fiuid means forsimultaneously actuatin the carriers inwardly, a die mounted on eachcarrier and including a concave operative surface conforming to andengageable with the exterior surface of the band, said concave operativesurfaces of the dies engaging the band entirely therearound, a seat onthe die, and a circular crimping member secured to said seat androtatably adjustable thereon, said circular crimping member having atransversely convex peripheral operative surface located in a planespaced from said concave operative surface and having a portion whichextends beyond said concave operative surface and acts to crimp aportion of an outer cylindrical ember into a recess of an innercylindrical member to which it is to be attached.

4. In a circular press for crimping a band. on a cylindrical bodyincluding a series of radially movable carriers and fluid means forsimultaneously actuating the carriers inwardly, a die mounted on eachcarrier and including a concave operative surface conforming to andengageable with the exterior surface of the band, said concave operativesurfaces of the dies engaging the band entirely therearound, a seat onthe die, and a circular crimping member secured to said seat androtatably adjustable thereon, said cir cular crimping member having anoperative surface located in a plane spaced from said concave operativesurface and having a portion which extends beyond said concave operativesurface and acts to crimp a portion of an outer cylindrical member intoa recess of an inner cylindrical member to which it is to be attached 5.In a circular press for crimping a band on a cylindrical body includinga series of radially movable carriers and fluid means for simultaneouslyactuating the carriers inwardly, a die mounted on each carrier andincluding a concave operative surface conforming to and engageable withthe exterior surface of the band, said concave operative surfaces of thedies engaging the band entirely therearound, and adjacent to the concaveoperative surface a second operative surface that is convexly curvedaway from the band, said second operative surface acting to crimp aportion of an exterior cylindrical member into a recess of an interiorcylindrical member to which it is to be attached.

6. Ina circular press including a series of radially movable carriersand fluid means for simultaneously actuating the carriers inwardly, adie mounted on each carrier and including a concave operative surfaceand a seat defined by an arc-shaped back wall, a circular crimpingmember secured to said seat and rotatably adjustable thereon, saidcrimping member having a transversely convex peripheral operativesurface a part of which engages said arc-shaped back wall and a portionof which extends beyond said concave operative surface and acts to crimpa portion of an outer cylindrical member into a recess of an innercylindrical member to which it is to be attached, the die having a,vertical opening therethrough, a bolt extending through said opening forfastening the crimping member in place, said bolt having a headprojecting below the die, and a stationary work support having a radialslot in which said bolt-head and the die are guided, said work supporthaving a central opening to receive the end of the exterior cylindricalmember and a shoulder surrounding the upper end of said opening forsupporting said member.

'7. In a circular press including a series of radially movable carriersand fluid means for simultaneously actuating the carriers inwardly, adie ounted on each carrier and including a seat defined by an arc-shapedback wall, and a circular crimping member secured to said seat againstthe back wall and rotatably adjustable thereon.

8. In a circular press including a series of radially movable carriersand fluid means for simultaneously actuating the carriers inwardly, adie mounted on each carrier and including a seat defined by anarc-shaped back wall, a circular crimping member arranged on said seatagainst the back wall, the die having a vertical opening therethrough, abolt extending through said opening for fastening the crimping member inplace, said bolt having a head projecting below the die, and astationary work support having a radial slot in which said bolt-head andthe die are guided.

9. In a circular press including a series of radially movable carriersand fluid means for simultaneously actuating the carriers inwardly, adie mounted on each carrier and including a seat defined by anarc-shaped back wall, a circulr crimping member arranged on said seatagainst the back wall, said crimping member having a transversely convexperipheral operative surface, the die having a vertical openingtherethrough, a bolt extending through said opening for fastening thecrimping member in place, said bolt having a head projecting below thedie, and a stationary work support having a radial slot in which saidbolt-head and the die are guided.

DAVID GUP.

